Herbert Griebel

Audio signal analyzing and editing with advanced methods in the time-frequency domain. Forensic analysis, restoration and audio processing.

Tools development for design and simulation of safety-critical, embedded, distributed systems, based on Matlab/Simulink, TargetLink and SCADE, MFC, rapid-prototyping capabilities. General customer support and services. Marketing and technical pre-sales, papers, customer technology workshops, and presentations.

Bison-based debugger for proprietary language, modeling complex data structures in Oracle databases. Various GUI front ends for debugger, grid editors, and complex database editors and viewers for dynamic structures.

Development of algorithms for estimating the quality of speech signals, used in the front end of the speech recognition engine. Detection of AGC artifacts and sinusoidal noise in speech signals. VUV detection, pitch detection and time-scale modifications.

Research on time-frequency problems. Frequency estimation of multiple overlapping sinusoids, local and linear time-frequency modification with defined locality. Transcription of voice and polyphonic music. In cooperation with Prof. Dr. Hans G. Feichtinger.

Developing DSP routines and algorithms for an audio signal analysing and processing tool.

Major: digital signal processing and time-frequency algorithms, pattern recognition, neural networks and classification.